So I decided to check on my long-since completed Red Version today and to my dismay, the message "Save Data Destroyed!" showed up before I could make it to the "Continue" screen and completely erased my profile! ;_;

I was no doubt annoyed and upset at this and would really like to know what could have possible caused this so a similar fate will not fall onto my Blue/Yellow/Gold/Silver/Crystal Versions. I have previously used the Missingno glitch and a couple GBC AR codes on this game in the past.

I'm going to go with Duncan Idaho's suggestion since AR codes and the Missingno glitch are not commonly known to randomly corrupt your game over two years after you've utilized them both.

please call me Duncan, anyhow ninty saves are know to be easly corrupted, i dont know why tough, im betting my bucks on the next theory the data gets erased by the game failing to completly overwrite the values and this cuases a corruption, if not done correctly im theorizing nintendo provided for a fix for this kind of "mistake" so if there somethign between 50% to 99% of the data only a warning and the previous data is loaded, if there is anything lower, it would erase the data to not compromise the rest of the game data?

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quote guile from SB

In the beginning, the Planet made Weapons to protect itself. What does it need protecting from? Tifa Lockhart.

Tifa Lockhart doesn't call the wrong number. You pick up the wrong PHS.

I know exactly why this happens. In GBC game cartriges there is a small battery like thing that stores the memory. If the battery starts to ware out, then the memory will start to stop working properly. There's a large possibility that it will just stop saving completely, but it would have to be really worn out for that to happen. However I heard there's a way to get that fixed.

It happened to my Game Boy now.......except I know why, someone bashed into it and... well... the game probably broke because of the pressure in the bash/when it fell on the ground. Got it over with, they still owe me though >